Command Reference

Complete reference for all PDU commands including data export, recovery operations, and disk scanning.

Parameter Reference

Configuration file settings and runtime parameters for historical scanning, recovery modes, and disk scanning.

System Requirements

Supported Platforms

Linux
Offline Physical Recovery
Use a separate offline working copy

MongoDB Versions

6.0.0 / 7.0.0 / 8.0.0
Match the program to the exact source version
Confirm other versions separately

This documentation applies to Linux and source versions MongoDB 6.0.0, 7.0.0 and 8.0.0. Freeze source copies and launch PDU from a directory outside the sources. State and output use the launch directory without separate path settings. Confirm other versions and special layouts separately.

Quick Start

Prepare PDU

Place the matching PDU program in a directory outside the sources.

Configure pdu.ini

Set MONGODBDATA. State and output use the directory where PDU is launched.

MONGODBDATA=/recovery-input/mongodb/source/dbpath

Launch PDU

Enter the PDU directory and start the program.

./pdu

Initialize Database Metadata

Run the bootstrap command to load database structure.

param sourceversion 8.0.0;
param sourcekind copy;
param sourcefrozen true;
b;
\l;
use appdb;
\dt;

Exported Data Structure

Collection data is exported as BSON files or Canonical Extended JSON line files. Recovery commands generate offline candidate data without writing to the target database. Native records retain sources, success, failure, unresolved dependencies, original errors and checkpoints.

./
  <published BSON or Extended JSON files>
  <catalog, batch records and checkpoints>
  incident.sqlite3
  source-<id>/<mode>-<format>/

# Use the actual filenames reported by PDU.

Usage Guide